Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

As of June 30, 2019, future minimum annual lease payments under all non-cancelable operating leases were as follows:

(in millions)	Future Operating Lease Payments
2019	$	396
2020	760
2021	666
2022	562
2023	463
Thereafter	1,977
Total future minimum lease payments	4,824
Less imputed interest	(806		)
Total	$	4,018